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关于潜育性水稻土改良的研究,国内及我省各单位已做了大量的工怍,特别是在开沟排水、改变耕作制度等方面取得了许多有益的成果。但目前关于土壤还原程度、土壤中还原性物质的增减与养分供应强度的关系,以及潜育化作用对土壤肥力特性的影响方面的研究资料尚较少。本试验拟从达方面进行初步探讨。在潜育性水稻土上栽培双季稻,通过对还原物体系进行动态研究,观察其变化规律,了解其还原程度,探求合适的指标,为潜育性水稻土的改良提供依据。
With regard to the study on the improvement of gneid paddy soils, a great deal of work has been done at home and in all units in our province. In particular, many useful achievements have been made in such aspects as ditching drainage and changing farming systems. However, the current research on the degree of soil reduction, the relationship between the increase and decrease of reducing substances in soil and the intensity of nutrient supply, and the influence of gleization on soil fertility are still few. This experiment is to be from the aspect of preliminary study. The double cropping rice was planted on the gneissic paddy soils and the dynamic change of the system was observed. The change of the system was observed, and the degree of reduction was also explored to find the suitable indexes to provide the basis for the improvement of the gneismatic paddy soils.